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首页> 外文期刊>Materials Chemistry and Physics. >Structural and electrochemical properties of polyurethanes/polyhedral oligomeric silsesquioxanes (PU/POSS) hybrid coatings on aluminum alloys
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Structural and electrochemical properties of polyurethanes/polyhedral oligomeric silsesquioxanes (PU/POSS) hybrid coatings on aluminum alloys

机译：铝合金上聚氨酯/多面体低聚倍半硅氧烷（PU / POSS）杂化涂层的结构和电化学性能

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摘要

Hybrid coatings based on polyurethanes/polyhedral oligomeric silsesquioxanes (PU/POSS) were synthesized through a sol-gel technique. Hydroxy-terminated polybutadiene (HTPB), isophoron diisocyanate (IPDI) and trans-cyclohexane diolisobuty-POSS (POSS) were used as precursors for the hybrid coatings. These hybrid films were deposited via spin coating onto an aluminum alloy in order to improve the corrosion protection. The effects induced by the POSS content on the structural, thermal properties and corrosion resistance of the coated samples were investigated. The structures of the obtained hybrid materials were characterized with gel permeation chromatograph (GPC), Fourier transform infrared (FTIR) and X-ray diffraction (XRD). The GPC, FTIR and XRD spectra suggested successful bonding of POSS silanols and polyurethane resin. The homogeneous dispersion of POSS cages in the PU matrices was evidenced by scanning electronic microscopy (SEM) and atomic force microscopy (ABA). Thermal properties of these PU/POSS hybrids have been improved over the pure polyurethane analyzed by dynamic mechanical analysis (DMA) and thermal gravimetric analysis (TGA). Poteritio-dynamic and salt-spray analysis revealed that the hybrid films provided an exceptional barrier and corrosion protection in comparison with PU and untreated aluminum alloy substrates.
机译：通过溶胶-凝胶技术合成了基于聚氨酯/多面体低聚倍半硅氧烷（PU / POSS）的混合涂料。羟基封端的聚丁二烯（HTPB），异佛尔酮二异氰酸酯（IPDI）和反式环己烷二醇异丁酸酯-POSS（POSS）被用作杂化涂料的前体。这些杂化膜通过旋涂沉积在铝合金上，以提高腐蚀防护性能。研究了POSS含量对涂层样品的结构，热性能和耐腐蚀性的影响。用凝胶渗透色谱（GPC），傅立叶变换红外光谱（FTIR）和X射线衍射（XRD）对所得杂化材料的结构进行表征。 GPC，FTIR和XRD光谱表明POSS硅烷醇与聚氨酯树脂成功结合。通过扫描电子显微镜（SEM）和原子力显微镜（ABA）证明POSS笼子在PU基质中的均匀分散。与通过动态力学分析（DMA）和热重分析（TGA）分析的纯聚氨酯相比，这些PU / POSS杂化物的热性能得到了改善。电位动力学和盐雾分析表明，与PU和未经处理的铝合金基材相比，杂化膜提供了出色的阻隔性和腐蚀保护。

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  • 来源
    《Materials Chemistry and Physics.》 |2009年第1期|91-98|共8页
  • 作者

    Y.S. Lai; C.W. Tsai; H.W. Yang; G.R Wang; K.H. Wu;

  • 作者单位

    Department of Applied Chemistry and Material science, Chung Cheng Institute of Technology, NDU, Tahsi, Taoyuan 335, Taiwan;

    Chemical Systems Research Division, Chung Shan Institute of Science and Technology, Lungtan, Taoyuan 325, Taiwan;

    Department of Applied Chemistry and Material science, Chung Cheng Institute of Technology, NDU, Tahsi, Taoyuan 335, Taiwan;

    Chemical Systems Research Division, Chung Shan Institute of Science and Technology, Lungtan, Taoyuan 325, Taiwan;

    Department of Applied Chemistry and Material science, Chung Cheng Institute of Technology, NDU, Tahsi, Taoyuan 335, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    polyhedral oligomeric silsesquioxane(POSS); poiyurethane(PU); thermal stability; corrosion;

    机译：多面体低聚倍半硅氧烷（POSS）;聚氨酯（PU）;热稳定性;腐蚀;

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